天天编程网
源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>云海天教程(yht7.com)</title> <style> p { max-width:20%; background-color:yellow; } </style> </head> <body> <p>This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text.</p> </body> </html>
运行结果